TW201238138A - Compact size antennas for mobile communication devices - Google Patents

Abstract

A compact size antenna for mobile communication devices includes a substrate, a ground plane, a radiation arm, a parasitic element, and a short-circuited branch. The ground plane is disposed on a second surface of the substrate. The radiation arm includes a first portion, a second portion, and a third portion that are disposed on a first surface of the substrate, a first plane, and a second plane, respectively, wherein: the first plane is perpendicular to the second plane, the first surface and the second surface of the substate; the second plane is parallel to the first surface of the substrate; and a distance between the second plane and the first surface of the substrate is a predetermined distance. The parasitic element is connected to the ground plane and extending onto the second surface of the substrate, the first plane, and the second plane. The short-circuited branch is disposed on the second surface of the substrate, connected to the ground plane, and overlapping the third portion of the radiation arm partly.

Description

201238138 VI. Description of the Invention: [Technical Field] The present invention relates to a miniaturized antenna, and more particularly to a miniaturized antenna suitable for use in a mobile communication device. [Previous technology & label] The communication system most commonly used in mobile communication devices is 2G and 3 systems. In order to meet this demand, the antenna in the mobile communication device will need to cover the 5 frequency band in a limited space. Including: 824MHz-894MHz, 880MHz-960MHz, 1710MHz-l880MHz, 1850MHz-1990MHz, 1920MHz-2170MHz. In the prior art, the Monopole antenna of the singularity of the singularity of the singularity of the singularity of the singularity of the singularity of the singularity of the singularity of the singularity of the singularity of the singularity of Although there have been inventions that use parasitic objects to improve the high frequency bandwidth, it is almost impossible to solve the problem of insufficient low frequency bandwidth. [Summary of the Invention]

The present invention provides a miniaturized antenna suitable for use in a mobile communication device, comprising: a substrate having a first surface and a first surface opposite to the first surface; a ground plane disposed on the second surface. The radiation arm includes a first portion, a second portion, and a third portion, respectively disposed on the first surface, a first plane, and a second plane, wherein the first portion of the light arm The two parts are connected to the first part and the upper PNAI-AC-01] 1-TWXX/0814-A42877TW-F 201238138 f third part; the above third part of the radiation arm includes: the above-mentioned first plane is perpendicular to the second plane And the second surface is parallel to the first surface, and the distance from the first surface is a predetermined distance; connecting the ground surface to the second surface, the first And the second plane; and the short-circuit branch are disposed on the first grounding surface connected to the (fourth) arm and partially overlapped with the (four) arm, and are applied to the action flute The main earth plate has a surface of a younger one and a second surface opposite to the above one; a grounding surface is disposed on the second surface; the reading includes a first portion, a second portion, and a third portion: not disposed on the first surface, the first plane, and the second portion; the second portion of the light arm is coupled to the first object to the second = knife; the third of the radiation arm The portion includes a first light shot f, the first plane is perpendicular to the second plane, the first surface port, the second surface '·, and the second plane are parallel to the first surface and the distance from the first surface a predetermined distance; and a short circuit i is disposed on the second surface, connecting the ground plane, and partially replenishing the third portion of the radiation arm. [Embodiment] The line Iff 1A - the system is not according to the present invention - the miniaturized sky map / 1B picture shown in the embodiment shows the miniaturization shown in FIG. 1 μ, ib diagram according to an embodiment of the present invention. The antenna 10 of 201238138 may include a substrate 12, a ground plane 14, a radiating arm 16, a parasitic element 17, and a shorting branch 18. The substrate 12 may be a fiberglass board. The ground plane 14, the radiating arm 16, the parasitic element 17, and the shorting branch 18 may be made of metal, such as copper. The substrate 12 has a first surface 12a and a second surface 12b, and the ground plane 14 is disposed on the second surface 12b. In another embodiment of the invention, the first surface 12a of the substrate 12 is also provided with another ground plane and is electrically connected to the ground plane 14. Since the miniaturized antenna 10 has a three-dimensional structure, the first plane £1 and the second plane E2 will be described here. As shown in FIG. 1B, the first plane E1 and the second plane E2, the first surface 12a and the second surface i2b of the substrate 12 are both perpendicular 'the second plane E2 is parallel to the first surface i2a of the substrate 12, and The distance of the first surface 12a is a predetermined distance, that is, a length d1. The radiating arm 16 includes a first portion 161, a second portion 162, and a third portion 163, respectively disposed on the first surface 12a of the substrate 12, the first plane E1, and the second plane £2. The second portion 162 of the radiating arm 16 connects the first portion 161 and the third portion 163. One end of the first portion 161 of the radiating arm 16 is a signal feed point for feeding energy or signals. The parasitic element 17 is connected to the ground plane 14 and extends to the second surface 12b of the substrate 12, the first plane £1 and the second plane E2. The shorting branch 18 is disposed on the second surface (3) of the substrate 12, to the ground plane 14, and partially overlaps the third portion 163 of the radiating arm 16. In addition, the distance between the radiation 6 and the parasitic element 17 must be less than the length. The distance between the short circuit branch 18 and the parasitic element must be greater than the length 13. In these and other embodiments, the length d2 is L5 and the length d3 is the H) axis. In the other part of the present invention, if the money is solved, it is 19 clothes, and the dielectric system =

PN Al-AC-0111-TWXX/0814-A42877TW-F 201238138, 4 condition 'length d3 is about 〇" wavelength; and if 介 2.IGHz' dielectric constant is 25, length d, = 0.005 -0.033 times the wavelength. It must be noted that, 'for the above component size, it is not the only way to do it. The monthly example reveals that the heart frequency and the dielectric coefficient are more visible to the person skilled in the art. Fig.: shows an embodiment according to an embodiment of the invention. Radiation (four) plan of the first 4 knives. As shown in Fig. 2, the second ΓίΓ3 of the radiating arm 16 includes light-emitting branches 163a, I63b. Wherein, the length of the corresponding low frequency radiant tract is longer than the length of the corresponding high frequency radiation branch (6) b. Fig. 3 is a plan view showing the shorting branch 18 according to the present invention. As shown in Fig. 3, the short-circuit branches 18 are connected to each other. Short Circuit Branch Figure 4 shows an implementation according to the invention = signal or energy by miniaturizing the antenna. Signal feed =: 1 Loss (unit: d job frequency (unit: MHz); do not think. As shown in Figure 4, when _ is the standard, miniaturized antenna H) has operating bands 41, 42. In the present invention - Real =: The range can be between 82 and Hz, =8_. Band; and the operating frequency is around 1710MHz to 217〇MHz, covering GSM1800/l9〇〇/UMTS^li- m., 】 巳 已 has been s frequency 1 again. Therefore, miniaturized antenna 10 can meet the 5 band requirements of 2G and 3G communication systems.

PNAi-AC-oin-TUTO〇8]4.A42877TW_F 201238138 In terms of antenna principle, the frequency point 41 in the short-circuit band 4 is. 1 8 can be resonantly generated in the operating portion 162, and the first portion 161 of the third portion eight, the second radiating branch 163a located in the operating band 41 can be resonantly generated 161, the second portion 162, buckle, ^ point 4 2. The first portion of the radiating arm 16 is resonantly generated. The radiating branch 163b of the second portion 163 of the resonance portion 16 may be similar to the dominant rate of the frequency in the low to high order of frequency. If the above is committed, the rate point 423, the frequency point 424 sequence 频率. The frequency point 411, the frequency point i 约为 degree is about 11 〇 mm, the width is about 5W thick =, ,; Like ugly, the width is about a trace of her first part 161 and the second part 162 is connected at - Qiu eight ~ length is about 14mm, the width is about 1; the length of the radiation branch of the radiation arm 16 is about 7Q, The free end = degree, the force is 2mm, the width of the other part is about 1 side; the length of the radiation branch 16 of the radiating arm 16 = - part 163 is about 33 嶋, and the width of the free end is about 6 mm 'other parts The width of the parasitic piece 17 is about 28 mm and the width is about 1 mm; the short-circuit branch 'I is about 89 mm' and the width is about 1 mm. It must be noted that the embodiment of the present invention discloses the above component size, and is not the only one. It is well known that people in the field of money can change the center frequency and the dielectric coefficient. 5A and 5B are respectively a perspective view and a perspective view showing the miniaturized antenna 50 according to an embodiment of the present invention. Miniaturized antenna 5〇 and small

PNAI-AC-Oi] 1.XWXX/0814-A42877TW-F 201238138 The antenna 10 is similar except that the third portion 563 of the radiating arm 56 includes only the radiating branch 163a. 6A and 6B are respectively a perspective view and a perspective view showing a miniaturized antenna 60 according to an embodiment of the present invention. The miniaturized antenna 60 is similar to the miniaturized antenna 10 except that: (1) the third portion 563 of the radiating arm 56 includes only the radiating branch 163a; (2) the miniaturized antenna 60 does not include the header 17. The present invention has been described above with reference to the preferred embodiments thereof, and is not intended to limit the scope of the present invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

PNA1-AC-0111-TWXX/0814-A42877TW-F 201238138 [Simplified Schematic] FIG. 1A is a perspective view showing a miniaturized antenna according to an embodiment of the present invention; FIG. 1B is a view showing an implementation according to the present invention. A perspective view of a miniaturized antenna as described in the following; FIG. 2 is a plan view showing a third portion of a radiating arm according to an embodiment of the present invention. 3 is a plan view showing a short-circuit branch according to an embodiment of the present invention; FIG. 4 is a diagram showing a return loss according to an embodiment of the present invention; and FIG. 5A is a view showing an embodiment according to an embodiment of the present invention; 3B is a perspective view of a miniaturized antenna according to an embodiment of the invention, and FIG. 6A is a perspective view of a miniaturized antenna according to an embodiment of the invention; 6B is a perspective view showing a miniaturized antenna according to an embodiment of the present invention. [Major component symbol description] 10, 50, 60 ~ miniaturized antenna; 12 ~ substrate; 12a ~ the first surface of the substrate;

PNA1-AC-0111 -TWXX/0814-A42877TW-F 201238138 12b ~ second surface of the substrate; 14 ~ ground plane; 16, 56 ~ radiating arm; 161 ~ first part of the radiating arm; 162 ~ second part of the radiating arm 163, 563~ the third part of the radiating arm; 163a, 163b~ the radiating branch of the third part of the radiating arm; 17~ parasitic piece; 18~ shorting branch; 18a, 18b~ inverted L-shaped part of the shorting branch 19~ signal feed point; 40~ foldback loss map; 41, 42~ operating band; 411, 412, 423, 424~ frequency point; dl, d2, d3~length;

El ~ first plane; E2 ~ second plane.

PNAI-AC-ΟΠ ] -TWXX/0814-A42877TW-F

Claims (1)

201238138 VII. Patent application scope: Set, including: 1. A miniaturized antenna, suitable for a substrate, having a first watch, a binding communication device, a second surface, a surface and a surface opposite to the first surface a grounding surface is disposed on the second surface; the radiating arm' includes a first portion and a first portion, respectively disposed on the first surface=the second surface, the second surface, and a second radiating arm The second portion is connected to the first portion and the third portion; the third portion of the radiating arm includes a first radiating branch, the first plane is perpendicular to the second plane, the first surface, and the first a second surface; and the second plane is parallel to the first surface and at a predetermined distance from the first surface; a parasitic element connecting the ground plane and extending to the second surface, the first plane, and the a second plane; and a short-circuit branch disposed on the second surface, connected to the ground plane, and partially overlapping the third portion of the radiating arm. 2. The miniaturized antenna of claim 1, wherein: the short circuit branch resonance generates a first frequency point located in a first operating frequency band; and the first portion and the second portion of the radiating arm And the above-mentioned first PNA1-AC-0111-TWXX/〇814.A42877tw.f S 12 201238138 three-part first radiation branch, the second-frequency point in the bore. The vibration generates the first #frequency band*10, the gold-such as the miniaturized antenna described in the first paragraph of the Shenqing patent circumference, the third part of the above-mentioned wheel material, and the first part of the above-mentioned wheel material, The branch, and the aforementioned first portion of the radiating arm and the upper and lower-center resonances - generate a third frequency point in the second operating band. The ringing antenna described in item 3 of the patent application scope, wherein the upper % <resonance generates the above-mentioned (four) item magnetic antenna in the second operating frequency band, wherein the upper u field arm and the above parasitic piece Less than 15 faces. = As described in the application (4), the miniaturized antenna, wherein the distance between the upper and the branch roads and the parasitic pieces is greater than l〇mm., f=r, please refer to the first paragraph of the patent scope. Miniaturized antenna, wherein the above-mentioned (fourth)---fourth-mei-second inverted-type miniaturized antenna is suitable for a mobile communication device, comprising: the board has a first surface and is opposite to the first The surface of the surface - a surface, a ground plane, disposed on the second surface; = the arm, including a first portion, a second portion and a third portion of the second knife placed on the first surface, a - a plane, and - a second plane, wherein: 4 said second portion of said arm is coupled to said first portion and said second portion; PNAI-AC-0111-TWXX/Q814-A42877TW-F 13 201238138 road above-mentioned light arm The third part of the above includes a first radiation support a vertical surface and the second surface; and the second plane, the second surface of the first surface is parallel to the first surface, and the distance from the first surface is a predetermined distance; and a short circuit branch is disposed on the No.## ^ /V ^ ^ ^ The surface of the LI brother is connected to the above grounding surface, and the 卩/knife overlaps the third part of the above-mentioned radiation arm. 9. The miniaturized antenna as described in claim 8 (4) , wherein: the upper short-circuit branch generates a frequency point of the (four)-first operational solution; and the first portion of the radiating arm, the second portion, and the first-first branch of the first--" The upper second frequency point is generated. 10. The small Wei antenna according to claim 8, wherein the third part of the radiation arm further includes: , a second radiation branch Resonating with the first portion and the second portion of the radiant arm to generate a third frequency point in the second operating band. The miniaturized antenna of claim 8 wherein the short circuit Interconnecting passage comprising - first - inverted portion and a first portion of the inverted tooth type L · a PNA1-AC-0111-TWXX / 0814-A42877TW-F S 14